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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares
Sep. 30, 2019
Dec. 31, 2018
Common stock, par or stated value per share (in usd per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 100,000,000 100,000,000
Common stock, shares issued (in shares) 25,664,000 22,466,000
Common stock, shares outstanding (in shares) 25,664,000 22,466,000